JP5321444B2 - Fuel supply device - Google Patents

Fuel supply device Download PDF

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JP5321444B2
JP5321444B2 JP2009294772A JP2009294772A JP5321444B2 JP 5321444 B2 JP5321444 B2 JP 5321444B2 JP 2009294772 A JP2009294772 A JP 2009294772A JP 2009294772 A JP2009294772 A JP 2009294772A JP 5321444 B2 JP5321444 B2 JP 5321444B2
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connection
pipe
fuel
supply device
fuel supply
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JP2011131824A (en
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敦史 関原
哲史 加藤
啓司 三吉
義也 平松
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Toyoda Gosei Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

本発明は、自動車などの燃料タンクに燃料を供給する燃料供給装置に関し、詳しくは、開閉操作時に、人体に帯電した静電気を燃料パイプを通じて、アースするための構成に関する。   The present invention relates to a fuel supply device that supplies fuel to a fuel tank of an automobile or the like, and more particularly to a configuration for grounding static electricity charged on a human body through a fuel pipe during an opening / closing operation.

従来、この種の燃料供給装置として、フィラーネックに接続した樹脂製の燃料パイプを通じて燃料を燃料タンクに供給する機構が知られている。こうした機構では、燃料キャップを開閉する際に、人が燃料キャップを掴んだときに静電気による不快感をなくすために、静電気を車体側へアースする機構が必要となる。こうしたアース経路として、フィラーネックに接続したワイヤを通じて車体側部材に接続される構成が知られている。しかし、従来の構成では、アースワイヤの組付作業が面倒であり、また、金属端子を使っているために、錆などの問題もある。   Conventionally, a mechanism for supplying fuel to a fuel tank through a resin fuel pipe connected to a filler neck is known as this type of fuel supply device. In such a mechanism, when opening and closing the fuel cap, a mechanism for grounding the static electricity to the vehicle body side is necessary to eliminate discomfort due to static electricity when a person grasps the fuel cap. As such a ground path, a configuration is known in which the ground path is connected to a vehicle body side member through a wire connected to a filler neck. However, in the conventional configuration, the work of assembling the ground wire is troublesome, and there are also problems such as rust due to the use of metal terminals.

一方、パイプの外層を導電性ゴムで形成することでアース経路を構成する技術も知られている（特許文献１）。しかし、こうした構成を樹脂性の燃料パイプに適用した場合に、フィラーネックとの電気的接続を確実にとることが要請されている。   On the other hand, a technique for forming an earth path by forming an outer layer of a pipe with conductive rubber is also known (Patent Document 1). However, when such a configuration is applied to a resin fuel pipe, it is required to ensure electrical connection with the filler neck.

特開平１１−１１８０７３号公報Japanese Patent Laid-Open No. 11-118073

本発明は、上記従来の技術の課題を踏まえ、樹脂製の燃料パイプを用いて、アース経路を確実かつ簡単に構成することができる燃料供給装置を提供することを目的とする。   An object of the present invention is to provide a fuel supply device capable of reliably and easily configuring a ground path using a resin fuel pipe in view of the above-described problems of the conventional technology.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の形態または適用例として実現することが可能である。   SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

［適用例１］
適用例１は、導電性樹脂から形成されパイプ接続部を有するフィラーネックと、上記パイプ接続部に接続され外層に導電性樹脂から形成された導電層を有する燃料パイプとを有し、上記フィラーネックから上記燃料パイプへのアース経路を構成する燃料供給装置であって、
上記パイプ接続部は、
燃料通路を形成し、上記燃料パイプのパイプ接続端を、その先端から所定長さに位置する根元まで挿入可能である接続本体と、
上記接続本体の外周面に、上記燃料パイプの内径よりその外径が大きく環状に突設された抜止突起と、
上記接続本体の外周面であって上記根元から断面ほぼＬ字形に突設され、上記接続本体の外周面との間で挿入間隙を形成する押圧部を有し、上記抜止突起を乗り越えて圧入された上記パイプ接続端の先端部を、上記挿入間隙に圧入することで、上記パイプ接続端の外層と電気的に接続するアース接続部と、
を備え、
上記押圧部は、上記挿入間隙の径方向の高さを、上記パイプ接続端の端部の肉厚以下に形成した基準面と、上記挿入間隙の一部を狭くするように上記基準面から突設され上記パイプ接続端の外層を押圧する接続用突起を有すること、
を特徴とする。 [Application Example 1]
Application Example 1 includes a filler neck formed of a conductive resin and having a pipe connection portion, and a fuel pipe having a conductive layer connected to the pipe connection portion and formed of a conductive resin as an outer layer. A fuel supply device that constitutes a ground path from the fuel pipe to the fuel pipe,
The pipe connection is
A connecting body that forms a fuel passage and is capable of inserting the pipe connecting end of the fuel pipe from the tip to the root located at a predetermined length;
On the outer peripheral surface of the connection main body, a retaining projection that protrudes in an annular shape whose outer diameter is larger than the inner diameter of the fuel pipe,
An outer peripheral surface of the connection main body that protrudes from the base in a substantially L-shaped cross section, has a pressing portion that forms an insertion gap with the outer peripheral surface of the connection main body, and is press-fitted over the retaining protrusion. In addition, by pressing the tip of the pipe connection end into the insertion gap, an earth connection portion that is electrically connected to the outer layer of the pipe connection end;
With
The pressing portion protrudes from the reference surface so that the radial height of the insertion gap is equal to or less than the wall thickness of the end of the pipe connection end and a part of the insertion gap is narrowed. Having a connection projection that is provided and presses the outer layer of the pipe connection end;
It is characterized by.

適用例１の燃料供給装置は、パイプ接続部に燃料パイプを圧入した箇所において、アース接続部により確実な電気的接続をとることができる。すなわち、パイプ接続部に、燃料パイプのパイプ接続端が挿入されたときに、抜止突起がパイプ接続端の内壁に食い込んで抜止めされ、この抜止め状態にて、アース接続部が接続本体の外周面との間の挿入間隙に圧入されたパイプ接続端の端部を挟持する。このとき、アース接続部の押圧部には、接続用突起が形成されており、この接続用突起がパイプ接続端の外層に食い込むことで電気的接続を確実にとることができる。このアース経路を通じて、給油ガンをフィラーネックの注入口に挿入したときに、人体に帯電した静電気を速やかに逃がすことができる。   The fuel supply device according to the application example 1 can establish a reliable electrical connection by the ground connection portion at a location where the fuel pipe is press-fitted into the pipe connection portion. That is, when the pipe connection end of the fuel pipe is inserted into the pipe connection portion, the retaining protrusion bites into the inner wall of the pipe connection end and is prevented from being removed, and in this retained state, the ground connection portion is connected to the outer periphery of the connection body. The end of the pipe connection end that is press-fitted into the insertion gap with the surface is clamped. At this time, a connection projection is formed on the pressing portion of the ground connection portion, and the connection projection can bite into the outer layer of the pipe connection end, so that electrical connection can be ensured. Through this earthing path, when the oiling gun is inserted into the filler neck inlet, static electricity charged on the human body can be quickly released.

また、アース経路は、燃料パイプを利用しているから、フィラーネックと車体側部材までのアースワイヤを配設することが不要となり、構成および接続作業を簡単にできる。   Further, since the ground path uses a fuel pipe, it is not necessary to provide a ground wire to the filler neck and the vehicle body side member, and the configuration and connection work can be simplified.

［適用例２〜３］
適用例２の接続用突起は、上記燃料パイプの挿入方向に山脈状に形成されている。適用例３の接続本体は、該接続本体の外周面であって、上記接続用突起に対向する位置に突条が形成されている。これらの構成により、アース接続部とパイプ接続端の外層との電気的接続をより確実にとることができる。 [Application Examples 2-3]
The connection projection of Application Example 2 is formed in a mountain range in the insertion direction of the fuel pipe. In the connection body of Application Example 3, a protrusion is formed on the outer peripheral surface of the connection body at a position facing the connection protrusion. With these configurations, the electrical connection between the ground connection portion and the outer layer of the pipe connection end can be more reliably achieved.

適用例４は、接続本体の根元であって、上記アース接続部と周方向に所定角度離れた位置に上記パイプ接続端の端面に食い込む回り止め突起が突設されている構成をとることができる。回り止め突起は、パイプ接続端の端面に食い込むことで、パイプ接続端の回り止めをするので、アース接続部の接続用突起の付近のズレやパイプ接続端の外層のへたりを低減し、アース経路の電気的接続への信頼性を高めることができる。   Application example 4 is a root of the connection main body, and can have a configuration in which a detent projection that bites into the end surface of the pipe connection end protrudes at a position away from the ground connection portion by a predetermined angle in the circumferential direction. . The anti-rotation protrusion bites into the end surface of the pipe connection end to prevent the pipe connection end from rotating.Therefore, the displacement near the connection protrusion of the ground connection part and the sag of the outer layer of the pipe connection end are reduced, The reliability of the electrical connection of the path can be increased.

本発明の一実施例にかかる燃料タンクへ燃料を供給する燃料供給装置を示す概略構成図である。It is a schematic block diagram which shows the fuel supply apparatus which supplies a fuel to the fuel tank concerning one Example of this invention. 図１に示すフィラーネックおよび燃料パイプの一部を拡大した断面図である。It is sectional drawing to which a filler neck shown in FIG. 1 and a part of fuel pipe were expanded. パイプ接続部および燃料パイプの接続箇所を示す斜視図である。It is a perspective view which shows the connection location of a pipe connection part and a fuel pipe. パイプ接続部および燃料パイプの接続箇所を示す半断面図である。It is a half sectional view showing a pipe connection part and a connection part of a fuel pipe. パイプ接続部に燃料パイプを接続する前の状態を示す半断面図である。It is a half sectional view showing a state before connecting a fuel pipe to a pipe connecting portion. パイプ接続部のアース接続部の付近を示す斜視図である。It is a perspective view which shows the vicinity of the ground connection part of a pipe connection part. パイプ接続部のアース接続部の付近を示す断面図である。It is sectional drawing which shows the vicinity of the ground connection part of a pipe connection part. パイプ接続部のアース接続部の付近の挿入方向と直角方向の断面図である。It is sectional drawing of the orthogonal | vertical direction with the insertion direction of the vicinity of the ground connection part of a pipe connection part.

（１） 燃料供給装置ＦＳの概略構成
図１は本発明の一実施例にかかる燃料タンクへ燃料を供給する燃料供給装置ＦＳを示す概略構成図である。燃料供給装置ＦＳは、自動車の燃料タンクへの燃料供給に使用されるものであり、燃料キャップＦＣと、フィラーネック２０と、フィラーネック２０に接続された燃料パイプ４０，５０と、燃料パイプ４０，５０を車体側部材（図示省略）に取り付けるためのパイプ保持装置ＰＨと、燃料パイプ４０，５０の端部を燃料タンクに接続するタンク接続部材（図示省略）とを備えている。燃料パイプ４０は、フィラーネック２０と燃料タンクとを接続する樹脂パイプであり、ポリエチレンなどから形成されている。燃料パイプ４０の一端はフィラーネック２０に接続するためのパイプ接続端４１になっており、その他端は燃料タンクに溶着されたタンク接続部材に接続されている。燃料パイプ５０は、給油時に燃料タンク内を外部へ通気するためのブリーザ用のパイプであり、複数の樹脂材料を積層することにより形成されており、つまり、内層が耐燃料透過性に優れたポリエチレンから形成され、外層がカーボンなどを添加することで導電性を付与したポリエチレンから形成されている。この構成により、給油時に燃料キャップＦＣをフィラーネック２０から外して、給油ガンから燃料をフィラーネック２０に注入すると、燃料は、フィラーネック２０および燃料パイプ４０で構成される燃料供給通路を通じて、燃料タンクに供給される。このとき、燃料パイプ５０は、燃料タンク内の燃料蒸気を燃料タンクから逃がして燃料の供給を円滑にするとともに、人体に帯電した静電気を除くアース経路の一部として作用する。以下、各部の構成について説明する。 (1) Schematic Configuration of Fuel Supply Device FS FIG. 1 is a schematic configuration diagram showing a fuel supply device FS that supplies fuel to a fuel tank according to an embodiment of the present invention. The fuel supply device FS is used for supplying fuel to a fuel tank of an automobile, and includes a fuel cap FC, a filler neck 20, fuel pipes 40, 50 connected to the filler neck 20, and fuel pipes 40, A pipe holding device PH for attaching 50 to a vehicle body side member (not shown) and a tank connecting member (not shown) for connecting the ends of the fuel pipes 40 and 50 to the fuel tank are provided. The fuel pipe 40 is a resin pipe that connects the filler neck 20 and the fuel tank, and is formed of polyethylene or the like. One end of the fuel pipe 40 is a pipe connection end 41 for connection to the filler neck 20, and the other end is connected to a tank connection member welded to the fuel tank. The fuel pipe 50 is a breather pipe for venting the inside of the fuel tank to the outside at the time of refueling, and is formed by laminating a plurality of resin materials. That is, the inner layer is polyethylene having excellent fuel permeation resistance. The outer layer is made of polyethylene imparted with conductivity by adding carbon or the like. With this configuration, when the fuel cap FC is removed from the filler neck 20 during refueling and fuel is injected from the refueling gun into the filler neck 20, the fuel is supplied to the fuel tank through the fuel supply passage constituted by the filler neck 20 and the fuel pipe 40. To be supplied. At this time, the fuel pipe 50 allows fuel vapor in the fuel tank to escape from the fuel tank so as to smoothly supply the fuel, and also acts as a part of a ground path that eliminates static electricity charged on the human body. Hereinafter, the configuration of each unit will be described.

（２） 燃料供給装置ＦＳの各部の構成
（２）−１ フィラーネック２０
図２は図１に示すフィラーネック２０および燃料パイプ４０，５０の一部を拡大した断面図である。図２において、フィラーネック２０は、注入口２１ａと流出口２１ｂとを接続し、燃料供給通路の一部である注入通路２０Ｐを構成するネック本体２１と、ネック本体２１の内側から外側にかけて、燃料キャップＦＣを開閉自在に取り付けるための取付金具３５とを備えている。 (2) Configuration of each part of fuel supply device FS (2) -1 Filler neck 20
FIG. 2 is an enlarged cross-sectional view of a part of the filler neck 20 and the fuel pipes 40 and 50 shown in FIG. In FIG. 2, a filler neck 20 connects an injection port 21a and an outflow port 21b, a neck body 21 constituting an injection passage 20P that is a part of the fuel supply passage, and a fuel from the inside of the neck body 21 to the outside. An attachment fitting 35 for attaching the cap FC so as to be freely opened and closed is provided.

ネック本体２１は、カーボンを添加したポリエチレンなどの導電樹脂から形成された射出成型品であり、その下部にパイプ接続部２２，２３を備えている。パイプ接続部２２は、流出口２１ｂを有し燃料パイプ４０を接続するための部位であり、燃料パイプ４０のパイプ接続端４１を拡張させて抜止めする複数の環状突起２２ａが形成されている。パイプ接続部２３は、ネック本体２１の側部に形成され、燃料パイプ５０を接続するための部位であり、燃料パイプ５０のパイプ接続端５１を拡開させて抜止する複数の環状突起が形成されている。   The neck body 21 is an injection-molded product formed from a conductive resin such as polyethylene to which carbon is added, and has pipe connection portions 22 and 23 at the lower part thereof. The pipe connection part 22 has a flow outlet 21b and is a part for connecting the fuel pipe 40, and is formed with a plurality of annular projections 22a for expanding and preventing the pipe connection end 41 of the fuel pipe 40 from being removed. The pipe connection portion 23 is formed on a side portion of the neck main body 21 and is a portion for connecting the fuel pipe 50, and a plurality of annular protrusions for expanding and preventing the pipe connection end 51 of the fuel pipe 50 from being formed are formed. ing.

図３はパイプ接続部２３および燃料パイプ５０の接続箇所を示す斜視図、図４はパイプ接続部２３および燃料パイプ５０の接続箇所を示す半断面図、図５はパイプ接続部２３に燃料パイプ５０を接続する前の状態を示す半断面図である。図３において、パイプ接続部２３は、通路を形成している基部２４と、基部２４から内周に流路を形成している基部円筒状の接続本体２５と、接続本体２５の外周部に環状に突設された抜止突起２６と、アース接続部３１と、回り止め突起３４とを備えている。図４および図５に示すように、抜止突起２６は、先端側から順に、第１ないし第４環状突部２６ａ，２６ｂ，２６ｃ，２６ｄを備えている。第１環状突部２６ａは、接続本体２５の先端に位置し、先端から徐々に拡径し接続本体２５に対してほぼ直角で内周方向へ縮径する山形となっており、燃料パイプ５０の圧入時は、挿入しやすく、燃料パイプ５０が引き抜かれる方向に力が加わっても抜けにくくなっている。第２環状突部２６ｂは、第１環状突部２６ａより根元側にあって、第１環状突部２６ａとの間にＯリングを収納できるだけの離れた位置に形成されている。第３および第４環状突部２６ｃ，２６ｄは、第２環状突部２６ｂよりも根元に形成され、第１環状突部２６ａとほぼ同様な形状である。   3 is a perspective view showing a connection point between the pipe connection part 23 and the fuel pipe 50, FIG. 4 is a half sectional view showing a connection part between the pipe connection part 23 and the fuel pipe 50, and FIG. It is a half sectional view showing a state before connecting. In FIG. 3, a pipe connecting portion 23 is formed by a base 24 forming a passage, a base cylindrical connecting body 25 forming a flow path from the base 24 to the inner periphery, and an annular outer periphery of the connecting body 25. And a grounding connection portion 31 and a rotation prevention projection 34. As shown in FIGS. 4 and 5, the retaining protrusion 26 includes first to fourth annular protrusions 26a, 26b, 26c, and 26d in order from the tip side. The first annular protrusion 26 a is located at the tip of the connection body 25, has a mountain shape that gradually increases in diameter from the tip and contracts in the inner circumferential direction at a substantially right angle to the connection body 25. At the time of press-fitting, it is easy to insert, and even if a force is applied in the direction in which the fuel pipe 50 is pulled out, it is difficult to come out. The second annular protrusion 26b is located on the base side of the first annular protrusion 26a, and is formed at a position far enough to accommodate the O-ring between itself and the first annular protrusion 26a. The third and fourth annular protrusions 26c and 26d are formed at the base of the second annular protrusion 26b and have substantially the same shape as the first annular protrusion 26a.

図６はパイプ接続部２３のアース接続部３１の付近を示す斜視図、図７はパイプ接続部２３のアース接続部３１の付近を示す断面図である。パイプ接続部２３には、基部２４の一端部に１箇所軸方向にアース接続部３１が突設されている。アース接続部３１は、接続本体２５との外周面とで燃料パイプ５０のパイプ接続端５１を挟持することで、アース経路を構成する部位である。アース接続部３１は、断面ほぼＬ字形に形成され、接続本体２５の外周面に挿入間隙３１Ｓを隔てた部分を押圧部３２としている。押圧部３２は、挿入間隙３１Ｓを、径方向の高さｈ１が燃料パイプ５０の肉厚ｔ１以下に形成する基準面３２ａを有している。図８はパイプ接続部２３のアース接続部３１の付近における挿入方向と直角方向の断面図である。押圧部３２には、基準面３２ａから突設され、挿入間隙３１Ｓの一部を狭くするように突設された接続用突起３２ｂが形成されている。接続用突起３２ｂは、燃料パイプ５０の挿入方向に山脈状に形成されている。接続用突起３２ｂの挿入端側には、傾斜面３２ｃが形成されることで、第４環状突部２６ｄとの間隙を広くすることで、パイプ接続端５１を挿入しやすくしている。接続本体２５の下面であって、接続用突起３２ｂに対向する位置に、突条２５ａが形成されている。接続用突起３２ｂは、燃料パイプ５０のパイプ接続端５１を、突条２５ａと共に狭めることにより、燃料パイプ５０の外層５０ａに食い込み、アース接続部３１と外層５０ａとの接触面積を増加させ、電気的接続性を高めている。   FIG. 6 is a perspective view showing the vicinity of the ground connection portion 31 of the pipe connection portion 23, and FIG. 7 is a cross-sectional view showing the vicinity of the ground connection portion 31 of the pipe connection portion 23. The pipe connection portion 23 is provided with a ground connection portion 31 protruding from one end portion of the base portion 24 in the axial direction. The ground connection part 31 is a part that constitutes a ground path by sandwiching the pipe connection end 51 of the fuel pipe 50 with the outer peripheral surface of the connection main body 25. The ground connection portion 31 is formed in a substantially L-shaped cross section, and a portion that is separated from the outer peripheral surface of the connection main body 25 by the insertion gap 31 </ b> S is a pressing portion 32. The pressing portion 32 has a reference surface 32 a that forms the insertion gap 31 </ b> S so that the radial height h <b> 1 is equal to or less than the thickness t <b> 1 of the fuel pipe 50. FIG. 8 is a cross-sectional view of the pipe connection portion 23 in the direction perpendicular to the insertion direction in the vicinity of the ground connection portion 31. The pressing portion 32 is formed with a connecting protrusion 32b that protrudes from the reference surface 32a and protrudes so as to narrow a part of the insertion gap 31S. The connection protrusion 32 b is formed in a mountain shape in the insertion direction of the fuel pipe 50. An inclined surface 32c is formed on the insertion end side of the connection protrusion 32b, so that the gap with the fourth annular protrusion 26d is widened to facilitate insertion of the pipe connection end 51. A protrusion 25a is formed on the lower surface of the connection body 25 at a position facing the connection protrusion 32b. The connection protrusion 32b narrows the pipe connection end 51 of the fuel pipe 50 together with the protrusion 25a, so that the connection protrusion 32b bites into the outer layer 50a of the fuel pipe 50 and increases the contact area between the ground connection portion 31 and the outer layer 50a. Increases connectivity.

図３に示すように、パイプ接続部２３には、回り止め突起３４が形成されている。回り止め突起３４は、燃料パイプ５０をパイプ接続部２３に対して回るのを防止するための突起であり、アース接続部３１のない箇所に１２０゜の周方向に間隔で２箇所（図示では１箇所）形成されており、先端が鋭角の楔形となった先鋭部３４ａを有している。先鋭部３４ａは、その高さが燃料パイプ５０の肉厚とほぼ同じであり、燃料パイプ５０の端面に食い込むことで、燃料パイプ５０を回り止めしている。   As shown in FIG. 3, the pipe connection portion 23 is formed with a detent projection 34. The anti-rotation projections 34 are projections for preventing the fuel pipe 50 from rotating with respect to the pipe connection portion 23, and are provided at two locations (1 in the drawing) at intervals of 120 ° in the circumferential direction at locations where the ground connection portion 31 is not provided. A pointed portion 34a having a sharp wedge shape at the tip. The sharpened portion 34 a has substantially the same height as the thickness of the fuel pipe 50, and prevents the fuel pipe 50 from rotating by biting into the end face of the fuel pipe 50.

（２）−２ 取付金具３５
図２において、取付金具３５は、金属製であり、燃料キャップＦＣを着脱するための内筒部３６と、内筒部３６の下部に一体に形成されたガン案内部３７と、内筒部３６の上部から折曲された外筒部３８とを備えている。内筒部３６は、燃料キャップＦＣで塞がれる開口３６ａを有するとともに、燃料キャップＦＣの雄ネジＦＣａに螺着するための雌ネジ３６ｂを有している。ガン案内部３７は、内筒部３６から縮径されており、その下部に給油ガンから吐出された燃料を燃料パイプ４０に導くための連通孔３７ａを備えている。外筒部３８は、内筒部３６の上部からネック本体２１の上端を囲むように折曲された管体であり、ネック本体２１の上部を挟持している。 (2) -2 Mounting bracket 35
In FIG. 2, the mounting bracket 35 is made of metal, and an inner cylinder part 36 for attaching and detaching the fuel cap FC, a gun guide part 37 integrally formed at the lower part of the inner cylinder part 36, and the inner cylinder part 36. The outer cylinder part 38 bent from the upper part is provided. The inner cylinder portion 36 has an opening 36a that is closed by the fuel cap FC, and a female screw 36b that is screwed into the male screw FCa of the fuel cap FC. The gun guide part 37 is reduced in diameter from the inner cylinder part 36, and has a communication hole 37 a for guiding the fuel discharged from the fuel gun to the fuel pipe 40 at the lower part thereof. The outer cylinder part 38 is a tubular body that is bent so as to surround the upper end of the neck body 21 from the upper part of the inner cylinder part 36, and sandwiches the upper part of the neck body 21.

（３） 実施例の作用・効果
上記実施例の構成により、以下の作用・効果を奏する。
（３）−１ 図１および図２に示すように、燃料供給装置ＦＳでは、取付金具３５からネック本体２１、パイプ接続部２３、アース接続部３１、燃料パイプ５０の外層５０ａ、パイプ保持装置ＰＨを通じて車体側部材へのアース経路が構成されている。このアース経路を通じて、給油ガンをフィラーネック２０の注入口２１ａに挿入したときに、人体に帯電した静電気を速やかに逃がすことができる。 (3) Operation and effect of embodiment The following operation and effect are exhibited by the configuration of the above embodiment.
(3) -1 As shown in FIGS. 1 and 2, in the fuel supply device FS, from the mounting bracket 35 to the neck body 21, the pipe connection portion 23, the ground connection portion 31, the outer layer 50 a of the fuel pipe 50, the pipe holding device PH. A ground path to the vehicle body side member is formed through the through hole. When the fuel gun is inserted into the inlet 21a of the filler neck 20 through this ground path, static electricity charged on the human body can be quickly released.

（３）−２ 燃料供給装置ＦＳのアース経路のうち、パイプ接続部２３と燃料パイプ５０との圧入された箇所にもアース接続部３１により確実な電気的接続をとることができる。すなわち、図７に示すように、燃料パイプ５０のパイプ接続端５１がパイプ接続部２３に挿入されたときに、抜止突起２６がパイプ接続端５１の内壁に食い込んで抜止めされ、この抜止め状態にて、アース接続部３１の挿入間隙３１Ｓに圧入されたパイプ接続端５１の端部を挟持するとともに、押圧部３２に形成された接続用突起３２ｂがパイプ接続端５１の外層５０ａに食い込むことで、接触面積が増加し電気的接続を確実にとることができる。 (3) -2 In the ground path of the fuel supply device FS, a reliable electrical connection can be established by the ground connection portion 31 even at a location where the pipe connection portion 23 and the fuel pipe 50 are press-fitted. That is, as shown in FIG. 7, when the pipe connection end 51 of the fuel pipe 50 is inserted into the pipe connection portion 23, the retaining projection 26 bites into the inner wall of the pipe connection end 51 and is prevented from being removed. Thus, the end of the pipe connection end 51 press-fitted into the insertion gap 31S of the ground connection portion 31 is sandwiched, and the connection projection 32b formed on the pressing portion 32 bites into the outer layer 50a of the pipe connection end 51. As a result, the contact area is increased and electrical connection can be ensured.

（３）−３ アース経路は、燃料パイプ５０を利用しているから、フィラーネック２０と車体側部材までのアースワイヤを配設することが不要となり、構成および接続作業を簡単にでき、しかも錆などの不具合もない。 (3) -3 Since the ground path uses the fuel pipe 50, it is not necessary to arrange the ground wire to the filler neck 20 and the vehicle body side member, the configuration and connection work can be simplified, and rust There are no problems such as.

（３）−４ 図８に示すように、接続本体２５は、接続用突起３２ｂに対向する接続本体２５の外周面に突条２５ａが形成されているので、接続用突起３２ｂとの間隙をより狭くすることができ、一層、電気的接続を確実にとることができる。 (3) -4 As shown in FIG. 8, the connection body 25 has a protrusion 25a formed on the outer peripheral surface of the connection body 25 facing the connection protrusion 32b, so that a gap between the connection body 25 and the connection protrusion 32b is further increased. It can be made narrower and electrical connection can be further ensured.

（３）−５ 図３に示すように、回り止め突起３４は、アース接続部３１と周方向に所定角度離れた位置に配置され、パイプ接続端５１の端面に食い込むことで、パイプ接続端５１の回り止めをするので、アース接続部３１の接続用突起３２ｂの付近のズレやパイプ接続端５１の外層５０ａのへたりを低減し、アース経路の電気的接続への信頼性を高めることができる。 (3) -5 As shown in FIG. 3, the anti-rotation protrusion 34 is disposed at a position away from the ground connection portion 31 by a predetermined angle in the circumferential direction, and bites into the end surface of the pipe connection end 51, thereby causing the pipe connection end 51. Therefore, the displacement of the ground connection portion 31 in the vicinity of the connection projection 32b and the sag of the outer layer 50a of the pipe connection end 51 can be reduced, and the reliability of the electrical connection of the ground path can be improved. .

（３）−６ 接続用突起３２ｂおよび突条２５ａは、燃料パイプ５０に対して軸方向に配置されているので、回り止め効果を増すとともに、挿入作業にも支障がない。 (3) -6 Since the connection protrusions 32b and the protrusions 25a are arranged in the axial direction with respect to the fuel pipe 50, the effect of preventing rotation is increased and the insertion operation is not hindered.

なお、この発明は上記実施例に限られるものではなく、その要旨を逸脱しない範囲において種々の態様において実施することが可能であり、例えば次のような変形も可能である。
上記実施例では、アース経路をブリーザ用の燃料パイプ５０に設けたが、これに限らず、燃料供給用の燃料パイプ４０に設けてもよい。 The present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.
In the above embodiment, the ground path is provided in the fuel pipe 50 for the breather. However, the ground path is not limited to this, and may be provided in the fuel pipe 40 for fuel supply.

２０…フィラーネック
２０Ｐ…注入通路
２１…ネック本体
２１ａ…注入口
２１ｂ…流出口
２２，２３…パイプ接続部
２２ａ…環状突起
２４…基部
２５…接続本体
２５ａ…突条
２６…抜止突起
２６ａ，２６ｂ，２６ｃ，２６ｄ…第１ないし第４環状突部
３１…アース接続部
３１Ｓ…挿入間隙
３２…押圧部
３２ａ…基準面
３２ｂ…接続用突起
３２ｃ…傾斜面
３４…回り止め突起
３４ａ…先鋭部
３５…取付金具
３６…内筒部
３６ａ…開口
３６ｂ…雌ネジ
３７…ガン案内部
３７ａ…連通孔
３８…外筒部
４０，５０…燃料パイプ
４１…パイプ接続端
５０ａ…外層
５１…パイプ接続端
ＦＣ…燃料キャップ
ＦＣａ…雄ネジ
ＦＳ…燃料供給装置
ＰＨ…パイプ保持装置 DESCRIPTION OF SYMBOLS 20 ... Filler neck 20P ... Injection | pouring channel | path 21 ... Neck main body 21a ... Injecting port 21b ... Outlet port 22, 23 ... Pipe connection part 22a ... Annular projection 24 ... Base part 25 ... Connection main body 25a ... Projection 26 ... Detachment protrusion 26a, 26b, 26c, 26d ... 1st to 4th annular projection 31 ... Earth connection portion 31S ... Insertion gap 32 ... Pressing portion 32a ... Reference surface 32b ... Connection projection 32c ... Inclined surface 34 ... Anti-rotation projection 34a ... Sharp point 35 ... Installation Metal fitting 36 ... Inner cylinder part 36a ... Opening 36b ... Female screw 37 ... Gun guide part 37a ... Communication hole 38 ... Outer cylinder part 40, 50 ... Fuel pipe 41 ... Pipe connection end 50a ... Outer layer 51 ... Pipe connection end FC ... Fuel cap FCa ... Male screw FS ... Fuel supply device PH ... Pipe holding device

Claims (4)

導電性樹脂から形成されパイプ接続部（２３）を有するフィラーネック（２０）と、上記パイプ接続部（２３）に接続され外層に導電性樹脂から形成された導電層を有する燃料パイプ（５０）とを有し、上記フィラーネック（２０）から上記燃料パイプ（５０）へのアース経路を構成する燃料供給装置であって、
上記パイプ接続部（２３）は、
燃料通路を形成し、上記燃料パイプ（５０）のパイプ接続端（５１）を、その先端から所定長さに位置する根元まで挿入可能である接続本体（２５）と、
上記接続本体（２５）の外周面に、上記燃料パイプ（５０）の内径よりその外径が大きく環状に突設された抜止突起（２６）と、
上記接続本体（２５）の外周面であって上記根元から断面ほぼＬ字形に突設され、上記接続本体（２５）の外周面との間で挿入間隙（３１Ｓ）を形成する押圧部（３２）を有し、上記抜止突起（２６）を乗り越えて圧入された上記パイプ接続端（５１）の先端部を、上記挿入間隙（３１Ｓ）に圧入することで、上記パイプ接続端（５１）の外層と電気的に接続するアース接続部（３１）と、
を備え、
上記押圧部（３２）は、上記挿入間隙（３１Ｓ）の径方向の高さを、上記パイプ接続端（５１）の端部の肉厚以下に形成した基準面（３２ａ）と、上記挿入間隙（３１Ｓ）の一部を狭くするように上記基準面（３２ａ）から突設され上記パイプ接続端（５１）の外層を押圧する接続用突起（３２ｂ）を有すること、
を特徴とする燃料供給装置。 A filler neck (20) formed of a conductive resin and having a pipe connection portion (23), and a fuel pipe (50) having a conductive layer connected to the pipe connection portion (23) and formed of a conductive resin as an outer layer; Comprising a ground path from the filler neck (20) to the fuel pipe (50),
The pipe connection (23)
A connection body (25) that forms a fuel passage and is capable of inserting the pipe connection end (51) of the fuel pipe (50) from the tip to the root located at a predetermined length;
A retaining protrusion (26) projecting annularly on the outer peripheral surface of the connection body (25), the outer diameter of which is larger than the inner diameter of the fuel pipe (50);
A pressing portion (32) which is an outer peripheral surface of the connection main body (25) and protrudes from the base in a substantially L-shaped cross section and forms an insertion gap (31S) with the outer peripheral surface of the connection main body (25). The pipe connection end (51) is inserted into the insertion gap (31S) by inserting the tip end of the pipe connection end (51) over the retaining protrusion (26) into the insertion gap (31S). A ground connection (31) for electrical connection;
With
The pressing portion (32) includes a reference surface (32a) formed so that a radial height of the insertion gap (31S) is equal to or less than a thickness of an end of the pipe connection end (51), and the insertion gap ( 31S) having a connection protrusion (32b) protruding from the reference surface (32a) so as to narrow a part of the pipe connection end (51) and pressing the outer layer of the pipe connection end (51),
A fuel supply device. 請求項１に記載の燃料供給装置において、
上記接続用突起（３２ｂ）は、上記燃料パイプ（５０）の挿入方向に山脈状に形成されている燃料供給装置。 The fuel supply device according to claim 1,
The fuel supply device, wherein the connection protrusion (32b) is formed in a mountain shape in the insertion direction of the fuel pipe (50). 請求項２に記載の燃料供給装置において、
上記接続本体（２５）は、該接続本体（２５）の外周面であって、上記接続用突起（３２ｂ）に対向する位置に突条（２５ａ）が形成されている燃料供給装置。 The fuel supply device according to claim 2,
The connection main body (25) is a fuel supply device in which a ridge (25a) is formed on the outer peripheral surface of the connection main body (25) at a position facing the connection protrusion (32b). 請求項１ないし請求項３のいずれかに記載の燃料供給装置において、
上記接続本体（２５）の根元であって、上記アース接続部（３１）と周方向に所定角度離れた位置に上記パイプ接続端（５１）の端面に食い込む回り止め突起（３４）が突設されている燃料供給装置。 The fuel supply device according to any one of claims 1 to 3,
An anti-rotation protrusion (34) that protrudes into the end surface of the pipe connection end (51) at the base of the connection main body (25) and is spaced apart from the ground connection portion (31) by a predetermined angle in the circumferential direction. Fuel supply device.
JP2009294772A 2009-12-25 2009-12-25 Fuel supply device Active JP5321444B2 (en)

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